Home / 10,979.92-15,149.64-6,262.48

Finding the Fourth Proportional to 10,979.92, 15,149.64 and 6,262.48

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Solution

The fourth proportional to 10,979.92, 15,149.64 and 6,262.48 is: 8,640.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.92 : 15,149.64 = 6,262.48 : x
  2. Step 2: Convert to fraction form
    10,979.92/15,149.64 = 6,262.48/x
  3. Step 3: Cross multiply
    10,979.92x = 15,149.64 × 6,262.48
  4. Step 4: Simplify right side
    10,979.92x = 94,874,317.51
  5. Step 5: Solve for x
    x = 94,874,317.51/10,979.92
  6. Step 6: Final answer
    x = 8,640.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.